AddGeometryToRegion Method

Visual Basic
C#
Objective-C
Java
C++

public static void AddGeometryToRegion( 
   RasterImage image,
   RasterRegionXForm xform,
   Geometry geometry,
   RasterRegionCombineMode combineMode
)

'Declaration
 
Public Shared Sub AddGeometryToRegion( _
   ByVal image As RasterImage, _
   ByVal xform As RasterRegionXForm, _
   ByVal geometry As Geometry, _
   ByVal combineMode As RasterRegionCombineMode _
)

'Usage
 
Dim image As RasterImage
Dim xform As RasterRegionXForm
Dim geometry As Geometry
Dim combineMode As RasterRegionCombineMode
 
RasterRegionConverter.AddGeometryToRegion(image, xform, geometry, combineMode)

public:
static void AddGeometryToRegion( 
   RasterImage^ image,
   RasterRegionXForm^ xform,
   Geometry^ geometry,
   RasterRegionCombineMode combineMode
)

Parameters

image: The source image.
xform: Leadtools.RasterRegionXForm object that LEADTOOLS uses to translate between display coordinates and image coordinates. If you specify null (Nothing in Visual Basic) in this parameter, the scalar fields default to 1, the offsets default to 0, and the view perspective defaults to the image view perspective.
geometry: The WPF/Silverlight geometry to add.
combineMode: The action to take regarding the existing image region, if one is defined.

To update an existing region, you specify how the new region is to be combined with the existing one using the combineMode parameter. For more information, refer to Leadtools.RasterRegionCombineMode.

For more information, refer to Creating a Region.

For more information, refer to Saving A Region.

For more information, refer to Working with the Existing Region.

For more information refer to RasterImage and WPF/Silverlight.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.Windows.Media

Public Sub AddGeometryToRegionExample()
   ' Load an image 
   Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")
   Dim dstFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_AddGeometryToRegion.jpg")

   Dim codecs As New RasterCodecs()

   Dim image As RasterImage = codecs.Load(srcFileName)

   ' We will add an ellipse region to the image

   ' Using WPF, create an elliptical geometry
   ' Create the ellipse geometry to add to the Path
   Dim ellipseGeometry As New EllipseGeometry()
   ellipseGeometry.Center = New Point(250, 250)
   ellipseGeometry.RadiusX = 200
   ellipseGeometry.RadiusY = 150

   Dim geometry As Geometry = ellipseGeometry

   ' Add this geometry to the image
   RasterRegionConverter.AddGeometryToRegion(image, Nothing, geometry, RasterRegionCombineMode.Set)

   ' Fill the image with a color
   Dim cmd As New FillCommand(RasterColor.FromKnownColor(RasterKnownColor.Red))
   cmd.Run(image)

   ' Save it
   codecs.Save(image, dstFileName, RasterImageFormat.Jpeg, 24)

   image.Dispose()

   codecs.Dispose()
End Sub

Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.Windows.Media;

public void AddGeometryToRegionExample()
{
   // Load an image 
   string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
   string dstFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_AddGeometryToRegion.jpg");

   RasterCodecs codecs = new RasterCodecs();

   RasterImage image = codecs.Load(srcFileName);

   // We will add an ellipse region to the image

   // Using WPF, create an elliptical geometry
   // Create the ellipse geometry to add to the Path
   EllipseGeometry ellipseGeometry = new EllipseGeometry();
   ellipseGeometry.Center = new Point(250, 250);
   ellipseGeometry.RadiusX = 200;
   ellipseGeometry.RadiusY = 150;

   Geometry geometry = ellipseGeometry;

   // Add this geometry to the image
   RasterRegionConverter.AddGeometryToRegion(image, null, geometry, RasterRegionCombineMode.Set);

   // Fill the image with a color
   FillCommand cmd = new FillCommand(RasterColor.FromKnownColor(RasterKnownColor.Red));
   cmd.Run(image);

   // Save it
   codecs.Save(image, dstFileName, RasterImageFormat.Jpeg, 24);

   image.Dispose();

   codecs.Dispose();
}

static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

Target Platforms

Reference

RasterRegionConverter Class
RasterRegionConverter Members